Based on this thread, https://our.umbraco.org/forum/developers/razor/40066-Model-binding-problem-when-multiple-forms-on-the-same-page-, I found http://code.lawrab.com/2012/05/using-bind-prefix-in-aspnet-mvc.html and was able to create pre-faced fields for two different forms on the same page. But now I'm stuck on the partial recognizing those pre-faced fields so that the form will process.

Here's the action line out of my controller:

        [HttpPost]
        public ActionResult TopSendEmail([Bind(Prefix = "TopBlogSub")] NewsletterModel model)

Here's the line calling the partial:

@Html.Partial("TopNLForm", new BCW.NewsletterModel(),  new ViewDataDictionary { TemplateInfo = new TemplateInfo { HtmlFieldPrefix = "TopBlogSub" } })

Here's the Inherients line out of my partial

@inherits Umbraco.Web.Mvc.UmbracoViewPage<BCW.NewsletterModel>

Here's the BeginUmbracoForm line out of my partial:

Html.BeginUmbracoForm("TopSendEmail", "NewsletterSurface")

What do I need to change in the HTML.BeginUmbracoFrom to so that it recognizes the prefaced fields? Or do I need to change the fields themselves?